具有压力、温度和湿度传感功能的柔性透明电子皮肤传感器,ACS Applied Materials & Interfaces

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具有压力、温度和湿度传感功能的柔性透明电子皮肤传感器
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-05-09 , DOI: 10.1021/acsami.3c03829
Liangren Chen ₁ , Youquan Xu ₁ , Yinfeng Liu ₁ , Jing Wang ₁ , Jianwen Chen ₁ , Xiaohua Chang ₁ , Yutian Zhu ₁

Affiliation

受人类皮肤的互锁生物几何形状的启发，我们在此设计了一种灵活透明的传感器，该传感器具有互锁方柱阵列，由 Ag 纳米粒子 (AgNPs)、柠檬酸 (CA) 和聚乙烯醇 (PVA) 组成，它表现出压力、温度和湿度的多感官能力。作为一种柔性压力传感器，联锁 AgNPs/CA/PVA 传感器具有高灵敏度（−1.82 kPa ^–1), 低检测限 (10 Pa), 快速响应 (75 ms), 并且由于互锁方柱阵列的接触电阻对压力的高灵敏度而具有出色的稳定性。由于 AgNPs/CA/PVA 复合材料的电阻对温度的严格依赖性，互锁的 AgNPs/CA/PVA 传感器也可以用作温度传感器，在检测环境温度方面具有高分辨率（0.1 °C）和可靠性. 此外，发现PVA和CA吸附的水分子数量随环境湿度的变化而变化。因此，联锁的 AgNPs/CA/PVA 传感器也能够实时检测湿度。这项工作提出了一种简单但有用的途径来制造柔性透明的电子皮肤传感器，该传感器在感知压力、温度和湿度方面具有巨大潜力。

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Flexible and Transparent Electronic Skin Sensor with Sensing Capabilities for Pressure, Temperature, and Humidity

Inspired by the interlocked biological geometry of human skin, herein, we design a flexible and transparent sensor with interlocked square column arrays with composites of Ag nanoparticles (AgNPs), citric acid (CA), and poly(vinyl alcohol) (PVA), which exhibit multisensory capabilities for pressure, temperature, and humidity. As a flexible pressure sensor, the interlocked AgNPs/CA/PVA sensor possesses a high sensitivity (−1.82 kPa^–1), low detection limit (10 Pa), fast response (75 ms), and outstanding stability due to the high sensitivity of the contact resistance of the interlocked square column arrays to pressure. Because of the rigid dependence of the resistance of the AgNPs/CA/PVA composite on temperature, the interlocked AgNPs/CA/PVA sensor can also act as a temperature sensor, which exhibits high resolution (0.1 °C) and reliability in detecting ambient temperature. In addition, it is found that the amount of water molecules adsorbed by PVA and CA changes with the ambient humidity. Therefore, the interlocked AgNPs/CA/PVA sensor is also able to detect humidity in real time. This work proposes a simple but useful route to fabricate a flexible and transparent electrical skin sensor, which has great potential in the perception of pressure, temperature, and humidity.

更新日期：2023-05-09

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